A square foundation is 2m x 2m in plan. The soil supporting the foundation has a friction angle of 25degree and cohesion of 20KN/m. The unit weight of the soil is 17.5 KN/m. Determine the allowableload on the foundation with a factor of safety of 3. A weak soil extend from 0 to 2m followed by astronger clay layer.

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Engineering

Civil Engineering

load on the foundation with a factor of safety of 3.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Shallow Foundations: Ultimate Bearing Capacity

Section: Chapter Questions

Problem 6.6P: A 2.0 m wide continuous foundation carries a wall load of 350 kN/m in a clayey soil where = 19.0...

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

A square foundation is 2m x 2m in plan. The soil supporting the foundation has a friction angle of 25
degree and cohesion of 20KN/m. The unit weight of the soil is 17.5 KN/m. Determine the allowable
load on the foundation with a factor of safety of 3. A weak soil extend from 0 to 2m followed by a
stronger clay layer.

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